213 lines
5.4 KiB
C
213 lines
5.4 KiB
C
![]() |
/*
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* tegra_sgtl5000.c - Tegra machine ASoC driver for boards using SGTL5000 codec
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*
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* Author: Marcel Ziswiler <marcel@ziswiler.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* Based on code copyright/by:
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*
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* Copyright (C) 2010-2012 - NVIDIA, Inc.
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* (c) 2009, 2010 Nvidia Graphics Pvt. Ltd.
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* Copyright 2007 Wolfson Microelectronics PLC.
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*/
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#include <linux/module.h>
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#include <linux/platform_device.h>
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#include <linux/slab.h>
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#include <linux/gpio.h>
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#include <linux/of_gpio.h>
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#include <sound/core.h>
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#include <sound/pcm.h>
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#include <sound/pcm_params.h>
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#include <sound/soc.h>
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#include "../codecs/sgtl5000.h"
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#include "tegra_asoc_utils.h"
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#define DRV_NAME "tegra-snd-sgtl5000"
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struct tegra_sgtl5000 {
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struct tegra_asoc_utils_data util_data;
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};
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static int tegra_sgtl5000_hw_params(struct snd_pcm_substream *substream,
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struct snd_pcm_hw_params *params)
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{
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struct snd_soc_pcm_runtime *rtd = substream->private_data;
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struct snd_soc_dai *codec_dai = rtd->codec_dai;
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struct snd_soc_card *card = rtd->card;
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struct tegra_sgtl5000 *machine = snd_soc_card_get_drvdata(card);
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int srate, mclk;
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int err;
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srate = params_rate(params);
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switch (srate) {
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case 11025:
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case 22050:
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case 44100:
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case 88200:
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mclk = 11289600;
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break;
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default:
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mclk = 12288000;
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break;
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}
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err = tegra_asoc_utils_set_rate(&machine->util_data, srate, mclk);
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if (err < 0) {
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dev_err(card->dev, "Can't configure clocks\n");
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return err;
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}
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err = snd_soc_dai_set_sysclk(codec_dai, SGTL5000_SYSCLK, mclk,
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SND_SOC_CLOCK_IN);
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if (err < 0) {
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dev_err(card->dev, "codec_dai clock not set\n");
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return err;
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}
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return 0;
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}
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static struct snd_soc_ops tegra_sgtl5000_ops = {
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.hw_params = tegra_sgtl5000_hw_params,
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};
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static const struct snd_soc_dapm_widget tegra_sgtl5000_dapm_widgets[] = {
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SND_SOC_DAPM_HP("Headphone Jack", NULL),
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SND_SOC_DAPM_LINE("Line In Jack", NULL),
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SND_SOC_DAPM_MIC("Mic Jack", NULL),
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};
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static struct snd_soc_dai_link tegra_sgtl5000_dai = {
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.name = "sgtl5000",
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.stream_name = "HiFi",
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.codec_dai_name = "sgtl5000",
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.ops = &tegra_sgtl5000_ops,
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.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
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SND_SOC_DAIFMT_CBS_CFS,
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};
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static struct snd_soc_card snd_soc_tegra_sgtl5000 = {
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.name = "tegra-sgtl5000",
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.owner = THIS_MODULE,
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.dai_link = &tegra_sgtl5000_dai,
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.num_links = 1,
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.dapm_widgets = tegra_sgtl5000_dapm_widgets,
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.num_dapm_widgets = ARRAY_SIZE(tegra_sgtl5000_dapm_widgets),
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.fully_routed = true,
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};
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static int tegra_sgtl5000_driver_probe(struct platform_device *pdev)
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{
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struct device_node *np = pdev->dev.of_node;
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struct snd_soc_card *card = &snd_soc_tegra_sgtl5000;
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struct tegra_sgtl5000 *machine;
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int ret;
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machine = devm_kzalloc(&pdev->dev, sizeof(struct tegra_sgtl5000),
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GFP_KERNEL);
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if (!machine) {
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dev_err(&pdev->dev, "Can't allocate tegra_sgtl5000 struct\n");
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return -ENOMEM;
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}
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card->dev = &pdev->dev;
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platform_set_drvdata(pdev, card);
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snd_soc_card_set_drvdata(card, machine);
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ret = snd_soc_of_parse_card_name(card, "nvidia,model");
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if (ret)
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goto err;
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ret = snd_soc_of_parse_audio_routing(card, "nvidia,audio-routing");
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if (ret)
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goto err;
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tegra_sgtl5000_dai.codec_of_node = of_parse_phandle(np,
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"nvidia,audio-codec", 0);
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if (!tegra_sgtl5000_dai.codec_of_node) {
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dev_err(&pdev->dev,
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"Property 'nvidia,audio-codec' missing or invalid\n");
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ret = -EINVAL;
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goto err;
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}
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tegra_sgtl5000_dai.cpu_of_node = of_parse_phandle(np,
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"nvidia,i2s-controller", 0);
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if (!tegra_sgtl5000_dai.cpu_of_node) {
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dev_err(&pdev->dev,
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"Property 'nvidia,i2s-controller' missing/invalid\n");
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ret = -EINVAL;
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goto err;
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}
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tegra_sgtl5000_dai.platform_of_node = tegra_sgtl5000_dai.cpu_of_node;
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ret = tegra_asoc_utils_init(&machine->util_data, &pdev->dev);
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if (ret)
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goto err;
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ret = snd_soc_register_card(card);
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if (ret) {
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dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
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ret);
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goto err_fini_utils;
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}
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return 0;
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err_fini_utils:
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tegra_asoc_utils_fini(&machine->util_data);
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err:
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return ret;
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}
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static int tegra_sgtl5000_driver_remove(struct platform_device *pdev)
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{
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struct snd_soc_card *card = platform_get_drvdata(pdev);
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struct tegra_sgtl5000 *machine = snd_soc_card_get_drvdata(card);
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int ret;
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ret = snd_soc_unregister_card(card);
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tegra_asoc_utils_fini(&machine->util_data);
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return ret;
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}
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static const struct of_device_id tegra_sgtl5000_of_match[] = {
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{ .compatible = "nvidia,tegra-audio-sgtl5000", },
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{ /* sentinel */ },
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};
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static struct platform_driver tegra_sgtl5000_driver = {
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.driver = {
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.name = DRV_NAME,
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.pm = &snd_soc_pm_ops,
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.of_match_table = tegra_sgtl5000_of_match,
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},
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.probe = tegra_sgtl5000_driver_probe,
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.remove = tegra_sgtl5000_driver_remove,
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};
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module_platform_driver(tegra_sgtl5000_driver);
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MODULE_AUTHOR("Marcel Ziswiler <marcel@ziswiler.com>");
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MODULE_DESCRIPTION("Tegra SGTL5000 machine ASoC driver");
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MODULE_LICENSE("GPL v2");
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MODULE_ALIAS("platform:" DRV_NAME);
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MODULE_DEVICE_TABLE(of, tegra_sgtl5000_of_match);
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